1 /* 2 * Maintainer : Steve Sakoman <steve@sakoman.com> 3 * 4 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by 5 * Richard Woodruff <r-woodruff2@ti.com> 6 * Syed Mohammed Khasim <khasim@ti.com> 7 * Sunil Kumar <sunilsaini05@gmail.com> 8 * Shashi Ranjan <shashiranjanmca05@gmail.com> 9 * 10 * (C) Copyright 2004-2008 11 * Texas Instruments, <www.ti.com> 12 * 13 * See file CREDITS for list of people who contributed to this 14 * project. 15 * 16 * This program is free software; you can redistribute it and/or 17 * modify it under the terms of the GNU General Public License as 18 * published by the Free Software Foundation; either version 2 of 19 * the License, or (at your option) any later version. 20 * 21 * This program is distributed in the hope that it will be useful, 22 * but WITHOUT ANY WARRANTY; without even the implied warranty of 23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 * GNU General Public License for more details. 25 * 26 * You should have received a copy of the GNU General Public License 27 * along with this program; if not, write to the Free Software 28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 29 * MA 02111-1307 USA 30 */ 31 #include <common.h> 32 #include <netdev.h> 33 #include <twl4030.h> 34 #include <asm/io.h> 35 #include <asm/arch/mmc_host_def.h> 36 #include <asm/arch/mux.h> 37 #include <asm/arch/mem.h> 38 #include <asm/arch/sys_proto.h> 39 #include <asm/arch/omap_gpmc.h> 40 #include <asm/gpio.h> 41 #include <asm/mach-types.h> 42 #include "overo.h" 43 44 DECLARE_GLOBAL_DATA_PTR; 45 46 #define TWL4030_I2C_BUS 0 47 #define EXPANSION_EEPROM_I2C_BUS 2 48 #define EXPANSION_EEPROM_I2C_ADDRESS 0x51 49 50 #define GUMSTIX_SUMMIT 0x01000200 51 #define GUMSTIX_TOBI 0x02000200 52 #define GUMSTIX_TOBI_DUO 0x03000200 53 #define GUMSTIX_PALO35 0x04000200 54 #define GUMSTIX_PALO43 0x05000200 55 #define GUMSTIX_CHESTNUT43 0x06000200 56 #define GUMSTIX_PINTO 0x07000200 57 #define GUMSTIX_GALLOP43 0x08000200 58 59 #define ETTUS_USRP_E 0x01000300 60 61 #define GUMSTIX_NO_EEPROM 0xffffffff 62 63 static struct { 64 unsigned int device_vendor; 65 unsigned char revision; 66 unsigned char content; 67 char fab_revision[8]; 68 char env_var[16]; 69 char env_setting[64]; 70 } expansion_config; 71 72 #if defined(CONFIG_CMD_NET) 73 static void setup_net_chip(void); 74 #endif 75 76 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */ 77 static const u32 gpmc_lan_config[] = { 78 NET_LAN9221_GPMC_CONFIG1, 79 NET_LAN9221_GPMC_CONFIG2, 80 NET_LAN9221_GPMC_CONFIG3, 81 NET_LAN9221_GPMC_CONFIG4, 82 NET_LAN9221_GPMC_CONFIG5, 83 NET_LAN9221_GPMC_CONFIG6, 84 /*CONFIG7- computed as params */ 85 }; 86 87 /* 88 * Routine: board_init 89 * Description: Early hardware init. 90 */ 91 int board_init(void) 92 { 93 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 94 /* board id for Linux */ 95 gd->bd->bi_arch_number = MACH_TYPE_OVERO; 96 /* boot param addr */ 97 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 98 99 return 0; 100 } 101 102 /* 103 * Routine: get_board_revision 104 * Description: Returns the board revision 105 */ 106 int get_board_revision(void) 107 { 108 int revision; 109 110 if (!gpio_request(112, "") && 111 !gpio_request(113, "") && 112 !gpio_request(115, "")) { 113 114 gpio_direction_input(112); 115 gpio_direction_input(113); 116 gpio_direction_input(115); 117 118 revision = gpio_get_value(115) << 2 | 119 gpio_get_value(113) << 1 | 120 gpio_get_value(112); 121 } else { 122 printf("Error: unable to acquire board revision GPIOs\n"); 123 revision = -1; 124 } 125 126 return revision; 127 } 128 129 /* 130 * Routine: get_sdio2_config 131 * Description: Return information about the wifi module connection 132 * Returns 0 if the module connects though a level translator 133 * Returns 1 if the module connects directly 134 */ 135 int get_sdio2_config(void) 136 { 137 int sdio_direct; 138 139 if (!gpio_request(130, "") && !gpio_request(139, "")) { 140 141 gpio_direction_output(130, 0); 142 gpio_direction_input(139); 143 144 sdio_direct = 1; 145 gpio_set_value(130, 0); 146 if (gpio_get_value(139) == 0) { 147 gpio_set_value(130, 1); 148 if (gpio_get_value(139) == 1) 149 sdio_direct = 0; 150 } 151 152 gpio_direction_input(130); 153 } else { 154 printf("Error: unable to acquire sdio2 clk GPIOs\n"); 155 sdio_direct = -1; 156 } 157 158 return sdio_direct; 159 } 160 161 /* 162 * Routine: get_expansion_id 163 * Description: This function checks for expansion board by checking I2C 164 * bus 2 for the availability of an AT24C01B serial EEPROM. 165 * returns the device_vendor field from the EEPROM 166 */ 167 unsigned int get_expansion_id(void) 168 { 169 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); 170 171 /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */ 172 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { 173 i2c_set_bus_num(TWL4030_I2C_BUS); 174 return GUMSTIX_NO_EEPROM; 175 } 176 177 /* read configuration data */ 178 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, 179 sizeof(expansion_config)); 180 181 i2c_set_bus_num(TWL4030_I2C_BUS); 182 183 return expansion_config.device_vendor; 184 } 185 186 /* 187 * Routine: misc_init_r 188 * Description: Configure board specific parts 189 */ 190 int misc_init_r(void) 191 { 192 twl4030_power_init(); 193 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); 194 195 #if defined(CONFIG_CMD_NET) 196 setup_net_chip(); 197 #endif 198 199 printf("Board revision: %d\n", get_board_revision()); 200 201 switch (get_sdio2_config()) { 202 case 0: 203 printf("Tranceiver detected on mmc2\n"); 204 MUX_OVERO_SDIO2_TRANSCEIVER(); 205 break; 206 case 1: 207 printf("Direct connection on mmc2\n"); 208 MUX_OVERO_SDIO2_DIRECT(); 209 break; 210 default: 211 printf("Unable to detect mmc2 connection type\n"); 212 } 213 214 switch (get_expansion_id()) { 215 case GUMSTIX_SUMMIT: 216 printf("Recognized Summit expansion board (rev %d %s)\n", 217 expansion_config.revision, 218 expansion_config.fab_revision); 219 setenv("defaultdisplay", "dvi"); 220 break; 221 case GUMSTIX_TOBI: 222 printf("Recognized Tobi expansion board (rev %d %s)\n", 223 expansion_config.revision, 224 expansion_config.fab_revision); 225 setenv("defaultdisplay", "dvi"); 226 break; 227 case GUMSTIX_TOBI_DUO: 228 printf("Recognized Tobi Duo expansion board (rev %d %s)\n", 229 expansion_config.revision, 230 expansion_config.fab_revision); 231 /* second lan chip */ 232 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4], 233 0x2B000000, GPMC_SIZE_16M); 234 break; 235 case GUMSTIX_PALO35: 236 printf("Recognized Palo35 expansion board (rev %d %s)\n", 237 expansion_config.revision, 238 expansion_config.fab_revision); 239 setenv("defaultdisplay", "lcd35"); 240 break; 241 case GUMSTIX_PALO43: 242 printf("Recognized Palo43 expansion board (rev %d %s)\n", 243 expansion_config.revision, 244 expansion_config.fab_revision); 245 setenv("defaultdisplay", "lcd43"); 246 break; 247 case GUMSTIX_CHESTNUT43: 248 printf("Recognized Chestnut43 expansion board (rev %d %s)\n", 249 expansion_config.revision, 250 expansion_config.fab_revision); 251 setenv("defaultdisplay", "lcd43"); 252 break; 253 case GUMSTIX_PINTO: 254 printf("Recognized Pinto expansion board (rev %d %s)\n", 255 expansion_config.revision, 256 expansion_config.fab_revision); 257 break; 258 case GUMSTIX_GALLOP43: 259 printf("Recognized Gallop43 expansion board (rev %d %s)\n", 260 expansion_config.revision, 261 expansion_config.fab_revision); 262 setenv("defaultdisplay", "lcd43"); 263 break; 264 case ETTUS_USRP_E: 265 printf("Recognized Ettus Research USRP-E (rev %d %s)\n", 266 expansion_config.revision, 267 expansion_config.fab_revision); 268 MUX_USRP_E(); 269 setenv("defaultdisplay", "dvi"); 270 break; 271 case GUMSTIX_NO_EEPROM: 272 printf("No EEPROM on expansion board\n"); 273 break; 274 default: 275 printf("Unrecognized expansion board\n"); 276 } 277 278 if (expansion_config.content == 1) 279 setenv(expansion_config.env_var, expansion_config.env_setting); 280 281 dieid_num_r(); 282 283 return 0; 284 } 285 286 /* 287 * Routine: set_muxconf_regs 288 * Description: Setting up the configuration Mux registers specific to the 289 * hardware. Many pins need to be moved from protect to primary 290 * mode. 291 */ 292 void set_muxconf_regs(void) 293 { 294 MUX_OVERO(); 295 } 296 297 #if defined(CONFIG_CMD_NET) 298 /* 299 * Routine: setup_net_chip 300 * Description: Setting up the configuration GPMC registers specific to the 301 * Ethernet hardware. 302 */ 303 static void setup_net_chip(void) 304 { 305 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE; 306 307 /* first lan chip */ 308 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5], 0x2C000000, 309 GPMC_SIZE_16M); 310 311 /* Enable off mode for NWE in PADCONF_GPMC_NWE register */ 312 writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe); 313 /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */ 314 writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe); 315 /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */ 316 writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00, 317 &ctrl_base->gpmc_nadv_ale); 318 319 /* Make GPIO 64 as output pin and send a magic pulse through it */ 320 if (!gpio_request(64, "")) { 321 gpio_direction_output(64, 0); 322 gpio_set_value(64, 1); 323 udelay(1); 324 gpio_set_value(64, 0); 325 udelay(1); 326 gpio_set_value(64, 1); 327 } 328 } 329 #endif 330 331 int board_eth_init(bd_t *bis) 332 { 333 int rc = 0; 334 #ifdef CONFIG_SMC911X 335 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE); 336 #endif 337 return rc; 338 } 339 340 #ifdef CONFIG_GENERIC_MMC 341 int board_mmc_init(bd_t *bis) 342 { 343 omap_mmc_init(0); 344 return 0; 345 } 346 #endif 347